body{
    width: 100%;
}

.public_container{
    width: 1200px;
    margin: 0 auto;
}

.top_banner img{
    width: 100%;
}

.top_nav{
    height: 37px;
    background-color: #f9f9f9;
    font-size: 13px;
}

.top_nav ul li{
    float: left;
    padding: 4px;
    border-right: 1px solid #a4a4a4;
}

.left_nav{
    float: left;
}

.right_nav{
    float: right;
}

.search_nav{
    height: 73px;
    line-height: 80px;
}
.search_nav img{
    height: 35px;
}
.num2_button{
    width: 80px;
    height: 30px;
    color: #fff;
    border-radius: 6px;
    float: left;
    margin-left: 30px;
    margin-top: 20px;
    line-height: 30px;
    text-align: center;
}

.yangban{
    float: left;
    line-height: 73px;
}

.yangban div{
    float: left;
    padding-left: 30px;
}

.search_nav input{
    background-color: #f0f0f0;
    border-radius: 25px;
    border: none;
    float: right;
    margin-top: 30px;
}


/* 大图片 */
.big_photo{
    background-image: url(../image/banner1.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    height: 550px;
    width: 100%;
    padding-top: 20px;
}

.big_photo .left_choice{
    width: 200px;
    height: 440px;
    background-color: #fff;
    border-radius: 6px;
    padding-top: 8px;;
}

.big_photo .left_choice li{
    padding-left: 20px;
    height: 73px;
    line-height: 30px;
    font-size: 16px;
    color: #848484;
} 

.big_photo .left_choice li p{
    font-size: 14px;
    color: #a6b6cf;
}


/* 用户登陆等等。。。。。 */
.user{
    width: 1200px;
    height: 90px;
    border-radius: 7px;
    margin-top: -70px;
    background-color: #fff;
    box-shadow: 0 3px 3px 0 #999;
}

.logIn{
    width: 272px;
    height: 88px;
    padding-left: 26px;
    padding-top: 17px;
    padding-right: 26px;
    float: left;
}
.header_pic {
    width: 55px;
    float: left;
}
.header_pic img{
    width: 55px;
}

.logtop{
    float: left;
    color: #999999;
    line-height: 55px;
}

.user_nav{
    width: 660px;
    margin-left: 74px;
}


/* 四个手机。。 */
.four_pic {
    width: 1200px;
    height: 200px;
    margin-top: 13px;
}
.four_pic li{
    width: 290px;
    height: 200px;
    float: left;
    margin-right: 10px;
}

.four_pic li img{
    height: 200px;
}


/* 热销单品 */
.rexiao{

}
.left_rexiao{
    width: 234px;
    height: 594px;
    float: left;
}

.right_rexiao li{
    width: 230px;
    height: 290px;
    margin-left: 10px;
    margin-bottom: 10px;
    background-color: #f9f9f9;
    text-align: center;
    float: left;
    line-height: 27px;
}

.right_rexiao li img{
    width: 116px;
    height: 146px;
    margin-top: 14px;
}

.new_label{
    width: 42px;
    height: 22px; 
    margin: 0 auto;
    background-color: #74c7ff;
    color: #fff;
}

.right_rexiao li span{
    color: #777777;
    font-size: 14px;
}


.bottom_l{
    width: 1920px;
    background-color: #f9f9f9;
}

.bottom_l .top{
    height: 83px;
    line-height: 83px;
    border-bottom: 1px solid #999;
}

.bottom_l .top li{
    width: 25%;
    text-align: center;
    font-size: 25px;
    float: left;
}

.bottom_l .bottom{
    width: 920px;
    margin-top: 25px;
    border-right: 1px solid #e5e5e5;
    float: left;
}

.bottom_l .bottom ul{
    width: 16.6%;
    float: left;
    font-size: 14px;
    color: #3a3a3a;
    line-height: 22px;
}

.bottom_l .bottom ul li:first-child{
    font-size: 16px;
}

.bottom_l .bottom_right{
    margin-top: 15px;
    text-align: center;
    width: 270px;
    line-height: 45px;
    float: right;

}